PDF malware analysis — malicious · 744ff0b314919d74

MALICIOUS

PDF

38.9 KB Created: 2020-08-16 20:05:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 6689289735c9558b69320e83be13c8c2 SHA-1: 451965451779a8fd459eae48090b9e098f4520e6 SHA-256: 744ff0b314919d74f45728f3019cc4c2361d450f2ed449c68cee73acd8f43df5

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a link farm designed to redirect users to potentially malicious sites. One such link, 'https://ttraff.com/pify?keyword=ohio+attorney+general+ccw+form', is explicitly flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to disguise malicious activity as legitimate content.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL https://ttraff.com/pify?keyword=ohio+attorney+general+ccw+form
- http://bolefa.jeelsphoto.com/uploads/1/3/1/3/131398440/ligaramo_dudixivebonu.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0429/3702/4668/files/ca_ipcc_amendments_for_may_2020.pdf
- https://cdn.shopify.com/s/files/1/0437/6225/3982/files/administrao_financeira_e_oramentria_download_estrategia_concursos.pdf
- https://cdn.shopify.com/s/files/1/0434/4555/1271/files/16607149194.pdf
- https://cdn.shopify.com/s/files/1/0432/4907/4336/files/porimuz.pdf
- https://cdn.shopify.com/s/files/1/0432/9222/9797/files/apache_solr_index_files.pdf
- https://cdn.shopify.com/s/files/1/0433/9479/3635/files/new_thrawn_trilogy.pdf
- https://cdn.shopify.com/s/files/1/0431/7685/3664/files/ririkorazaxib.pdf
- https://cdn.shopify.com/s/files/1/0430/8228/5216/files/ielts_speaking_task_2_cue_cards.pdf
- https://cdn.shopify.com/s/files/1/0432/7122/5494/files/kutamu.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00005bf0.bin` `875ef0e0776ebed5bc5c59dcd399d529ae2b137b5a699368d7c0f208a658c5be`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5BF0	5340 bytes
`font_01_sfnt_off00006e09.bin` `c8f99c8fcb276d13100047b546b6200a1b20ca99b7aa9c1e4541c1df0c3184b8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6E09	9692 bytes

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